Ken Ash vs. Mike Willis — Career Comparison

Looking at the career totals, Ken Ash and Mike Willis are fairly close on the surface numbers. Ken Ash posted stronger numbers in WHIP (1.469 vs 1.524) and home runs allowed (0.33 per nine innings vs 1.09). Mike Willis had the advantage in ERA (4.59 vs 4.96). By the career numbers, Ken Ash had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.